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com.opensymphony.oscache.base.algorithm
Class AbstractConcurrentReadCache.Entry  

java.lang.Object
  com.opensymphony.oscache.base.algorithm.AbstractConcurrentReadCache.Entry

All Implemented Interfaces:

java.util.Map.Entry

Enclosing class:

AbstractConcurrentReadCache

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protected static class AbstractConcurrentReadCache.Entry

extends java.lang.Object

implements java.util.Map.Entry

AbstractConcurrentReadCache collision list entry.

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Field Summary
protected  int	hash
protected  java.lang.Object	key
protected  AbstractConcurrentReadCache.Entry	next
protected  java.lang.Object	value

 

Constructor Summary
(package private)	AbstractConcurrentReadCache.Entry(int hash, java.lang.Object key, java.lang.Object value, AbstractConcurrentReadCache.Entry next)

 

Method Summary
protected  java.lang.Object	clone()           This method may be called to create a new copy of the Object.
boolean	equals(java.lang.Object o)           Compares the specified object with this entry.
java.lang.Object	getKey()           Get the key corresponding to this entry.
java.lang.Object	getValue()           Get the value.
int	hashCode()           Returns the hash code of the entry.
java.lang.Object	setValue(java.lang.Object value)           Set the value of this entry.
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

next

protected final AbstractConcurrentReadCache.Entry next

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key

protected final java.lang.Object key

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hash

protected final int hash

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value

protected volatile java.lang.Object value

Constructor Detail

AbstractConcurrentReadCache.Entry

AbstractConcurrentReadCache.Entry(int hash,
                                  java.lang.Object key,
                                  java.lang.Object value,
                                  AbstractConcurrentReadCache.Entry next)

Method Detail

getKey

public java.lang.Object getKey()

Description copied from interface: java.util.Map.Entry

Get the key corresponding to this entry.

Specified by:

getKey in interface java.util.Map.Entry

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setValue

public java.lang.Object setValue(java.lang.Object value)

Set the value of this entry. Note: In an entrySet or entrySet.iterator), unless the set or iterator is used under synchronization of the table as a whole (or you can otherwise guarantee lack of concurrent modification), setValue is not strictly guaranteed to actually replace the value field obtained via the get operation of the underlying hash table in multithreaded applications. If iterator-wide synchronization is not used, and any other concurrent put or remove operations occur, sometimes even to other entries, then this change is not guaranteed to be reflected in the hash table. (It might, or it might not. There are no assurances either way.)

Specified by:

setValue in interface java.util.Map.Entry

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getValue

public java.lang.Object getValue()

Get the value. Note: In an entrySet or entrySet.iterator, unless the set or iterator is used under synchronization of the table as a whole (or you can otherwise guarantee lack of concurrent modification), getValue might return null, reflecting the fact that the entry has been concurrently removed. However, there are no assurances that concurrent removals will be reflected using this method.

Specified by:

getValue in interface java.util.Map.Entry

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equals

public boolean equals(java.lang.Object o)

Description copied from interface: java.util.Map.Entry

Compares the specified object with this entry. Returns true only if the object is a mapping of identical key and value. In other words, this must be:

(o instanceof Map.Entry)
&& (getKey() == null ? ((Map.Entry) o).getKey() == null
                     : getKey().equals(((Map.Entry) o).getKey()))
&& (getValue() == null ? ((Map.Entry) o).getValue() == null
                       : getValue().equals(((Map.Entry) o).getValue()))

Specified by:

equals in interface java.util.Map.Entry

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hashCode

public int hashCode()

Description copied from interface: java.util.Map.Entry

Returns the hash code of the entry. This is defined as the exclusive-or of the hashcodes of the key and value (using 0 for null). In other words, this must be:

(getKey() == null ? 0 : getKey().hashCode())
^ (getValue() == null ? 0 : getValue().hashCode())

Specified by:

hashCode in interface java.util.Map.Entry

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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clone

protected java.lang.Object clone()

Description copied from class: java.lang.Object

This method may be called to create a new copy of the Object. The typical behavior is as follows:

• o == o.clone() is false
• o.getClass() == o.clone().getClass() is true
• o.equals(o) is true

However, these are not strict requirements, and may be violated if necessary. Of the three requirements, the last is the most commonly violated, particularly if the subclass does not override Object.equals(Object)>Object.equals(Object) 55 .

If the Object you call clone() on does not implement java.lang.Cloneable (which is a placeholder interface), then a CloneNotSupportedException is thrown. Notice that Object does not implement Cloneable; this method exists as a convenience for subclasses that do.

Object's implementation of clone allocates space for the new Object using the correct class, without calling any constructors, and then fills in all of the new field values with the old field values. Thus, it is a shallow copy. However, subclasses are permitted to make a deep copy.

All array types implement Cloneable, and override this method as follows (it should never fail):

 public Object clone()
 {
   try
     {
       super.clone();
     }
   catch (CloneNotSupportedException e)
     {
       throw new InternalError(e.getMessage());
     }
 }
 

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> com >> opensymphony >> oscache >> base >> [ algorithm overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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